Carthamin yellow as well as preparation method and dyeing method thereof

A technology of safflower yellow pigment and dyeing method, which is applied in the direction of dyeing method, chemical instruments and methods, azo dyes, etc., can solve the problems of safflower yellow pigment waste, etc., and achieve the effect of easy operation and environmental protection

Active Publication Date: 2021-03-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the technical problems existing in the prior art, for example: safflower yellow is not fully utilized, and safflower yellow will cause unnecessary waste, the purpose of the present invention is to provide a kind of safflower yellow and its preparation method , safflower yellow is extracted from natural plants, and the preparation process of safflower yellow is green and pollution-free, which is beneficial to environmental protection and health, and will not damage safflower red

Method used

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  • Carthamin yellow as well as preparation method and dyeing method thereof
  • Carthamin yellow as well as preparation method and dyeing method thereof

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preparation example Construction

[0042] The inventors of the present invention found that safflower yellow pigment has good water solubility, but safflower red pigment is insoluble in water. Therefore, safflower yellow can be obtained by dissolving in water. Specifically, the first aspect of the present invention provides a method for preparing safflower yellow pigment, which includes the following steps: soaking safflower in water, and squeezing the safflower to collect the yellow pigment liquid, wherein the The temperature of the water is below 50°C.

[0043] Specifically, in the present invention, the preparation method of the safflower yellow pigment comprises the following steps:

[0044] Step 1): Soak the safflower in water below 50°C, squeeze it and let it stand still, and collect the yellow pigment liquid once;

[0045] Step 2): Soak the squeezed safflower in step 1) in water again, squeeze it again, and collect the secondary yellow pigment liquid; mix the primary yellow pigment liquid and the secon...

Embodiment 1

[0103] The present embodiment 1 and application example 1 use the following raw materials by weight: 50 g of bleached sheep wool, 200 g of dried safflower, 6 g of alum, and 1 g of cream of tartar.

[0104] Extraction of safflower yellow

[0105] 1. Soak safflower in 6L of water in a container, rub it with your hands and let it stand for 2 hours.

[0106] 2. Filter with cotton cloth to collect the yellow pigment liquid once.

[0107] 3. Put the filtered safflower into the container, inject 6L of water, stir evenly and soak for 12 hours.

[0108] 4. Filter, wrap the petals in cotton cloth and wring to extract the juice, collect the secondary yellow pigment liquid.

[0109] 5. Mix the yellow pigment liquid obtained twice and set aside.

Embodiment 2

[0133] The present embodiment 2 and application example 2 use the following raw materials by weight: 50 g of bleached mohair, 400 g of dried safflower, 6 g of alum, and 1 g of cream of tartar.

[0134] Extraction of safflower yellow

[0135] 1. Soak the safflower in 5.5L of water in a container, rub it with your hands and let it stand for 1.5 hours.

[0136] 2. Filter with cotton cloth to collect the yellow pigment liquid once.

[0137] 3. Put the safflower in the container again, inject 5.5L of water, stir evenly and soak for 13 hours.

[0138] 4. Filter, wrap the petals in cotton cloth and wring to extract the juice, collect the secondary yellow pigment liquid.

[0139] 5. Mix the yellow pigment liquid obtained twice and set aside.

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Abstract

The invention provides carthamin yellow as well as a preparation method and a dyeing method thereof. The preparation method of the carthamin yellow comprises the following steps that carthamus tinctorius is placed in water to be soaked, the carthamus tinctorius is extruded, then yellow pigment liquid is collected, and the temperature of the water is 50 DEG C or below. The carthamin yellow providedby the invention can be extracted from safflower carthamus, and the preparation process of the carthamin yellow is green and pollution-free, is beneficial to environmental protection and health, anddoes not damage carthamin red. Furthermore, when the carthamin yellow is used for dyeing, the operation is simple, convenient, environment-friendly and harmless, and the carthamin yellow is especiallysuitable for dyeing wool fibers.

Description

technical field [0001] The invention relates to a safflower yellow pigment, a preparation method and a dyeing method thereof, belonging to the field of dyes. Background technique [0002] Safflower is an annual (spring sowing) or biennial (autumn sowing) herbaceous plant of the Compositae family, and its petals contain safflower yellow and safflower red pigments. Safflower yellow (scientific name: Safflorgelb) is a chalcone compound, a water-soluble natural yellow pigment with a high content, and has a wide range of applications. Because safflower yellow has the advantages of bright color, high temperature resistance, acid resistance, light resistance, reduction resistance and anti-microbial properties, it can be used as a natural yellow dye. Its dyeing effect is good, especially suitable for dyeing protein fibers such as wool and silk. [0003] The chemical dyes used in the printing and dyeing industry have a serious impact on the natural environment and are also harmful ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54D06P1/34D06P1/36D06P1/653D06P1/673D06P3/14D06P3/20
CPCC09B61/00C09B67/0096D06P1/36D06P1/34D06P1/0032D06P3/20D06P3/14D06P1/6533D06P1/6735
Inventor 杨建军
Owner TSINGHUA UNIV
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